\usepackage{framed}
\usepackage{quoting}
\usepackage{xcolor}

\definecolor{bgcolor}{HTML}{DADADA}

\let\oldtexttt\texttt

\renewcommand{\texttt}[1]{
  \colorbox{bgcolor}{\oldtexttt{#1}}
}

\colorlet{shadecolor}{bgcolor}
% define a new environment shadedquotation. You can change leftmargin and
% rightmargin as you wish.
\newenvironment{shadedquotation}
 {\begin{shaded*}
  \quoting[leftmargin=1em, rightmargin=0pt, vskip=0pt]
 }
 {\endquoting
 \end{shaded*}
 }

%
\def\quote{\shadedquotation}
\def\endquote{\endshadedquotation}

\usepackage{fvextra}
\DefineVerbatimEnvironment{Highlighting}{Verbatim}{breaklines,commandchars=\\\{\}}